Geometric instrument



Patented May 27, 1919.

2 SHEETS--3HEET F. STANTON.

GEOMETRIC INSTRUMENT.

' APPLICATION FILED FEB. 1. 1919.

$8M? Humane 1 F. STANTON.

GEOMETRIC INSTRUMENT. APPLICATION mm FEB. 1. 1919.

m M 1 9 7 m M a n a Mm i m m P w 0 %w M s 4% 6 Q. 4 M Wm H i 5 y w V 9 W A 00 M r M l L 3 i- 1H B FREDERICK STANTON, 0F CAMDEN, NEW JERSEY.

GEOMETRIC INSTRUMENT.

Specification of Letters Patent- Patented May 2'7, 1919.

Application filed February 1. 1919. Serial No. 274,534.

To all whom it may concern:

Be it known that I, FREDERICK STANTON, a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, haveinvented certain new and useful Improvements in Geometric Instruments, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in geometric instruments, and has relation more particularly to a device of the general character of a straight-edge type, and it is an object of the invention to provide a novel and improvedwinstrument of this character which may be employed with convenience and facility for a. multiplicity of usages.

It is also an object of the invention toprovide a novel and improved device of this general character including a head or base member and a blade assembled for relative adjustments, so that the instrument is particularly adapted for the convenient use thereof by mechanics, as the relative adjustments permit the instrument to be employed as a rule, a scriber, a level, a plumb, a square, an inclinometer, and for other special purposes as will hereinafter be more particularly referred to.

Another object of the inventionis to provide a novel and improved instrument of this character including arelatively movable and adjustable head or base and blade wherein convenient and effective means are employed for maintaining these parts in their various relative adjustments in accordance with the particular uses .of'the device and in accordance with the occasions of practice.

The invention consists in the details of construction and in the combinationand a1" rangement of theseveral parts of my improved geometric instrument whereby certain 45 important advantages are attained and the device rendered simpler, less expensive and otherwise, more convenient and advantageous for use, as will be hereinafter more fully set forth. j r

The novel features ofrmy invention will hereinafter be definitely claimed.

In order that my inventionmay be the better understood, I will now'proceed to describe the same with'reference to the accompanylng drawings, wherein: 1 t

Figure 1 is. a view in side. elevation of an in.

strument constructed in accordance with an embodiment of my invention and'having applied to the blade thereof an attachment to permit the instrument to be employed as a surface gage or scriber with the head or base and blade in an adjustment to permit the use of the instrument as a square;

Fig. 2 is a view in top plan with portions broken away of the device as illustrated in F 1g. 1, and with the attachment for the blade omitted;

Fig. 3 is a View in side elevation-of the blade detached and opposite to the elevation of the blade illustrated in Fig. 1;

Fig. & is an enlarged fragmentary sectional view taken transversely through the blade and the attachment thereon as illustrated inFig. 1, with the scriber or marking implement in fragment; I

Fig. 5 is an enlarged view in rear elevation of the device as illustrated in Fig. 1 with the blade shown in fragment; Fig. 6 is an enlarged fragmentary view. partly in top plan and partly in horizontal section illustrating the means herein disclosed wherebythe blade is mounted for both groove 1 extending longitudinally thereof and along its entire length, so that the instrument may be" employedrwith facility in connection with cylindrical work or other curved surfaces. A11 end portion of the base or head H is provided with a recess or kerf 2, (Fig. 5) and the upper or outer face of the base or head H at oneside of said kerf is provided with a transversely disposeddepression 3 to afford a bearing for the pin or shank 4. 5 denotes a capalso coacting with the pin or shank 4 and which is anchored to the base or head 'H in any conventional manner, but preferably through the medium of the screws 6. vThe cap 5 serves as a means-for maintaining the pin or shank 4 in applied position upon the base or head- 1 and it is to be particularly noted that the axial center of such pin or shank 4 is flush with the upper or outer surface of the base or head H.

M denotes an elongated member also having its opposed faces in parallelism, and which is provided at one end portion with an offset part 7 8) which extends within the recess 0r kerf 2 and through which the pin or shank a is disposed whereby said member M is capable of swinging movement toward or from the upper or outer face of the base or head H.

The pivoted end portion of the member M is also provided with a groove or recess 8 which partially intersects the opening 9 of the member M in which the pin or shank extends.

B denotes an elongated fiat blade having its opposite edges straight and in parallelism, and which is provided on its opposite faces with the graduations 10 of linear measme and coacting with each of the straight edges of the blade. One side of the blade is provided throughout its entire length with a groove or channel 11 in parallelism with the straight edges of the blade and an end portion of the blade, as indicated at 12, is arranged on an angle of 15.

The inner longitudinal marginal port-ion of the blade B fits within the groove or recess 8 of the member M and also snugly fits within the transverse recess 1% in the pin or shank 4c. The base of the recess 1% is straight and radial to the pin or shank l so that the upper or outer face of the member M and the blade B are perpendicularly related when assembled. The outer end portion 15 of the pin or shank a is threaded and has engaged therewith a clamping nut 16 which coacts with the adjacent side of the head or base H for holding the pin or shank 4. against movement so that the blade B and the base or head H may be held at a desired angle, and which angle may be readily determined by the degree graduations 17 carried by the upstanding plate 18 suitably anchoredthrough the top or outer face of the head or base H at one side of the member M. To facilitate the determination of the angle it is desired that the side face of the member M adj acent the plate 18 have produced thereon an index 19.

Suitably anchored to the outer or top face of the member M is a spirit level S or the like, and which is adapted to be particularly employed as will hereinafter be referred to.

The member M has disposed longitudinally therethrough an opening 20 in which is arranged an elongated rod 21 having threaded upon its outer edge portion a nut 22 contacting with the adjacent end of the member M. The opposite end port-ion of the rod 21 is provided with an extension 22 which partially overlies a side face of the blade B and said extension terminates in a laterally directed lug 23 which snugly fits within the groove 11 of the blade and whereby the blade B is effectually held to the member M and seated within the recess 1t whereby the perpendicular relation of the member M and the blade B is maintained. It is to be understood that upon requisite rotation of the nut 22 the blade B may be readily detached so that the same may be separately used as a scale or the like.

As is particularly illustrated in Figs. 1 and 4, 2 1 denotes a U-shaped member strad dling the blade B and disposed transversely thereof. 25 denotes a pin or shank disposed through the free extremities of the member 24 outwardly of the blade B and surrounding one end portion of the pin or shank 25 outwardly of the member 24: is a collar 26, and directed through said end portion of the pin or shank 25 and the collar 26 is an elongated rod 27 having one end portion 27 curved. The opposite end portions of the rod 27 are pointed so that the device may be capable of use either as a gage or scriber.

The opposite end portion of the pin or shank 25 has threaded thereupon outwardly of the member 24:, a clamping nut 28 whereby the member 2 1 may be effectually held at a desired position longitudinally of the blade B and also whereby the elongated rod 27 may also be held at a desired angle relative to the blade B.

lVith the device as arranged in Fig. 1 of the accompanying drawings, the same may be readily employed as a tri-square, plumb, or surface gage, while upon desired adjustment of the rod 27, the device may also be employed with facility as a scriber, as it is believed to be clearly apparent to those skilled in the art to which my present invention appertains. Vith the blade B adjusted to a position in longitudinal aline ment with the base or head H the member M will be perpendicularly related to both the blade B and the head or base H, and in which arrangement the device may be further employed as a plumb. It is also to be understood that the device may be em- 7 ployed as a level under certain conditions 115 with the blade B removed. It is alsothought to be readily understood that by having the level S mounted upon the member M the device may be employed to advantage as an inclinometer, and in which 120 event it is preferred that the index 19 coa'ct with the degree graduations 17.

My improved device as herein embodied may also be employed to advantage as a depth gage, and in which event it is PIG-.125 ferred that the square end of the blade B be employed, and for which reason said end portion of the blade B is longitudinally adjusted below the head or base H in accordance with the requirements of :practice.

My improved device can also be employed with convenience and facility as a bevel and also as a twist drill gage, and which uses are readily permitted by the convenient and ready relative adjustments of the head or base H and the blade B.

From the foregoing description, it is thought to be obvious that a geometric instrument constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof, and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim.

1. An instrument of the class described comprising a head, a member movable relative to the head, a pin mounted upon the head and extending through an end of the movable member whereby said member is supported for swinging movement, said end portion of the member and the pin having registering recesses, and a blade seating within said registering recesses.

2. An instrument of the class described comprising a head, a member movable rela tive to the head, a pin mounted upon the head and extending through an end of the movable member whereby said member is supported for swinging movement, said end portion of the member and the pin having registering recesses, a blade'seating within said registering recesses, and means carried by the member and engageable with the blade for holding the blade against displacement.

3. An instrument of the class described comprising a head having a recess at one end portion, a member overlying a face of the head, a shank carried by the head at one side of the recess and extending through an end portion of the member whereby said member is engaged with the head for swinging movement relative thereto, the pivoted end portion of the member being provided with a recess, a blade extending within the recess of the member, and also the recess of the head, said blade engaging the shank to hold said shank against displacement, and a clamping member engaged with the shank and coacting with a face of the head.

4:. An instrument of the class described comprising a head having a recess, a member overlying a face of the head, a shank carried by the head and extending through an end portion of the member whereby said member is engaged with the head for swinging movement relative thereto, the pivotal end portion of the member being provided with a recess, and a blade extending within the recess of the member and the recess of the head and engaging the shank to hold said shank against displacement.

5. An instrument ofthe class described comprising a head having a recess, a member overlying a face of the head, a shank carried by the head and extending through an end portion of the member whereby said member is engaged with the head for swinging movement relative thereto, the pivotal end portion of the member being provided with a recess, said shank being provided with recess registering with the recess in the head, and a blade extending within the recesses of the member, the head and the shank.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

FREDERICK STANTON.

lVitnesses:

W. F. ScHoEFFLING, WM. G. GRAHAM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner at Patents, Washington, D. G. 

